The purpose of the Green Deal is to make a better and healthier life for the people and future, through building energy-efficient buildings and public transports. The reason is, that most of these produce CO2. For buildings it is the used materials like cement and for the transportation it is the gas.

The EU decided to work on sustainable development in every area. The EU-countries want to establish this development in their countries. Furthermore, they aim to raise the awareness of the relevance of sustainability for sustainable urban development policy.